JPS634906Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an air conditioner, and particularly to an air conditioner used to cool a crane operating room, etc. in a steelworks or a steelworks. .

(Prior art) Normally, the atmosphere surrounding an air conditioner installed outside the crane operator's cab is filled with highly corrosive gases such as sulfur dioxide gas, so as shown in Figure 4, the mounting frame a has a corrosion-resistant structure. When the frame plate c of the air cooler (cross fin coil type evaporator) b made of a flexible material is directly attached, the drain d generated in the air cooler b becomes dilute sulfuric acid, and the steel plate mounting frame that the drain d comes into contact with is attached. The contact part of a with the lower frame plate _c1 is corroded. Therefore, at the time of design, there was a problem in that the plate thickness of the mounting frame a had to be made thicker by the amount of the estimated cutting allowance.

(Purpose of the invention) The purpose of the invention is to improve corrosion resistance by protecting the parts of the air cooler mounting frame that are likely to come in contact with the drain with a corrosion-resistant material, and thereby to reduce the thickness of the mounting frame. The point is to make it possible.

(Structure of the invention) In order to achieve this object, the structure of the invention is to attach an air cooler made of a corrosion-resistant material to the inner surface of the mounting frame provided at the air intake port of the casing, and to attach the air cooler made of a corrosion-resistant material to the lower frame plate of the air cooler. A thin protective member made of a corrosion-resistant material is interposed between the mounting frame and the mounting frame to prevent the drain from coming into contact with the mounting frame.

(Example) Hereinafter, an example of the present invention will be described based on the attached drawings.

As shown in FIG. 1, this air conditioner 1 is installed on the ceiling of a crane operator's cabin 2 in a steelworks or the like, and is designed to cool the inside of the crane operator's cabin 2, which is connected to an air outlet duct 4 and a suction duct 3. It's summery.

As shown in FIG. 2, this air conditioner 1 has a casing 5 partitioned into two left and right chambers by a partition plate 26.
Inside, a condensing unit 6 is placed in the right side chamber, and a cooler unit 7 is placed in the left side chamber.

The condensing unit 6 includes a compressor 8, a condenser 9, a condenser fan 10 and a condenser fan motor 11.

On the other hand, the cooler unit 7 includes an air cooler 12 serving as an evaporator, an air cooler fan 13, and an air cooler fan motor 14.

The air cooler 12 includes a cross-fin coil type heat exchange section having copper fins, copper heat transfer tubes, and brass left and right tube plates, and brass upper and lower frame plates 18 fixed to the top and bottom of the heat exchange section. , 19. The air cooler 1 is fixed by screwing the upper and lower frame plates 18 and 19 to a mounting frame 17 made of a copper plate provided on the side plate 15 of the casing 5.
2 installation is performed.

Between the lower frame plate 19 and the mounting frame 17, a thin (plate thickness 0.3 mm) protective member 20 made of a corrosion-resistant material such as stainless steel plate (SUS304) covers the entire surface of the drain contacting part of the mounting frame 17. It is placed so as to cover it. Furthermore, a drain pan 22 made of stainless steel plate is installed below the air cooler 12. (See Figure 3).

With this configuration, the drain 21 generated in the air cooler 12 is drained from the lower frame plate 19 made of brass and the protective member 2 made of stainless steel plate, both of which have excellent corrosion resistance.
The drain pan 2 installed below the air cooler 12 with this protection member 20 acting as a guide while contacting the drain pan 2
2, resulting in a marked improvement in corrosion resistance.

Furthermore, since the mounting frame 17 is prevented from coming into contact with the drain 21 by the protective member 20, there is no need to allow for a combing allowance as in the past, and its plate thickness is approximately half that of the conventional one. For example, a thickness of 4.5mm may be 2.3mm).

In addition to the air cooler 12 in which a refrigerant flows through the heat transfer tubes, water may be used in the air cooler 12. Further, the condensing unit 6 and the cooler unit 7 may be of an integral type or may be of a separate type. Furthermore, if water is allowed to flow through the heat transfer tubes, an air conditioner with only a cooler unit may be used.

Further, in the drawing, reference numeral 23 indicates an air outlet, 24, 2
5 is a duct connection port.

(Effect of the invention) According to the invention, when installing the air cooler 12 made of a corrosion-resistant material on the inner surface of the mounting frame 17 provided at the air suction port 16 of the casing 5, the lower frame plate of the air cooler 12 Since the thin protection member 20 made of a corrosion-resistant material is interposed between the mounting frame 17 and the mounting frame 19, the drain contact part can be made of only the corrosion-resistant material, which improves the corrosion resistance of the air conditioner. It has the practical effect of being able to significantly improve performance.

In addition, since the mounting frame 17 is prevented from coming into contact with the drain by the protective member 20, even when using a steel plate etc. that does not have very good corrosion resistance, there is no need to allow for a combing allowance, and the plate thickness can be reduced compared to the conventional example. It also has the advantage that it can be made much thinner, reducing costs.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an installation example of an air conditioner according to an embodiment of the present invention, FIG. 2 is a side view showing the inside of the air conditioner shown in FIG. 1, and FIG. The enlarged view of FIG. 4 is a diagram corresponding to FIG. 3 of a conventional air conditioner. 5...Casing, 12...Air cooler, 16
... Air suction port, 17 ... Mounting frame, 19 ... Lower frame plate, 20 ... Protection member.

Claims (1)

[Scope of utility model registration request] An air cooler 12 made of a corrosion-resistant material is installed on the inner surface of the mounting frame 17 provided at the air suction port 16 of the casing 5.
An air conditioner characterized in that a thin protective member 20 made of a corrosion-resistant material is interposed between a lower frame plate 19 of the air cooler 12 and the mounting frame 17.